My husband, who used to be a network manager and therefore had to deal with viruses on a company level (with stupid sales people who did sh** like bring in their laptops from home and hook them into his network without asking first, thus infecting said network with ... well you get the idea)

At any rate, he installed a program called avast! on my computer for virus protection. While the corporate level program apparently costs big bucks, the personal version is free. It has the added bonus that when you install it you are actually installing two parts - the anti virus software itself, and the virus recovery database of known active viruses - and the database piece will automatically update itself once a day when you connect to the internet. He's in the shower so I can't ask him if he remembers the address, but I am sure google can be your friend.

And did I mention it's free for personal use?

Might want to give it a try.